A nice variant of basic income is minimal tax return when everyone gets tax return proportional to a small percentage of the total tax collected past year. This would allow to gradually reduce other forms of social payments, without introducing arbitrary fixed values for the amount of basic income.
It can be eating heavily processed foods with extra sugar (in 1 of the 56 different approved names for sugar by the FDA). Or it can be from soda in myriad forms. Or packed and hidden in the aisles of a grocery store of, again, high prpocessed and low nutrient foods.
Or they're in a food desert in the extreme rural areas or the big cities.
And I'd definitely classify obesity as a type of malnourishment. Mal- just means bad.
https://www.theguardian.com/commentisfree/2019/sep/03/give-k...
I suspect obesity is frequently due to getting too little nutrition while getting enough/too much in the way of calories. You keep eating precisely because you are malnourished and it fosters cravings.